# STC SA1601SO

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Aero Services Raleigh-Durham, Inc., United States
- Description: Installation of Bendix FCS-810 automatic flight control system including flight director indicator(FC-813B) and manual electric trim. (421B WITH RILEY MOD STC SA4293WE)
- Status date: May 1, 1984
- Product: Aircraft, Small Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A7CE](https://openairdocs.org/tcds/A7CE)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/70F26E8449886D5185256CC100821432.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1601SO

## ADs that name it (0)

None.

## Approved models (1)

- The Cessna Aircraft Company 421B ([TCDS A7CE](https://openairdocs.org/tcds/A7CE))

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